Ford F-150 1998, Direct Fit California OBDII Catalytic Converter by MagnaFlow®. If your car needs replacement, install one that will get you through the smog check and give you more horsepower. This converter will directly replace...

Increases exhaust flow compared to original factory converterIncreased exhaust flow allows your engine to make more power

Ford F-150 1998, Direct Fit Federal Catalytic Converter by MagnaFlow®. If your car needs replacement, install one that will get you through the smog check and give you more horsepower. This converter will directly replace the...

Increases exhaust flow compared to original factory converterIncreased exhaust flow allows your engine to make more power

Ford F-150 4.2L RWD (Rear-Wheel Drive) 1998, Catalytic Converter by Bosal®. If you’re in need of a replacement catalytic converter, you can’t do better than Bosal. They’re a leading supplier to vehicle manufacturers and use...

Constructed to meet your vehicle’s specific emissions requirementsRadial flow concept allows for an even distribution of the gas flow in the converter for the optimal conversion of harmful gases

Ford F-150 1998, Direct Fit Undercar Catalytic Converter by Eastern Catalytic®. If you need to replace your failed or damaged catalytic converter, this product is the right choice. Designed specifically for your vehicle, this...

Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor

Ford F-150 5.4L 1998, Monster™ Round Muffler by Banks®. Get increased power and torque from reduced backpressure with this straight-through muffler. With its straight-through, massive 4” core, this muffler presents essentially...

Ford F-150 1998, Intermediate Pipe by DynoMax®. 2.5" Inlet / 3" Outlet. With their great selection of exhaust pipes and accessories, DynoMax will provide you with everything necessary to complete the exhaust job. Every component is...

Designed to ensure unrestricted exhaust flowDirect fit – no modifications needed to install

Ford F-150 1998, Tail Pipe by DynoMax®. With their great selection of exhaust pipes and accessories, DynoMax will provide you with everything necessary to complete the exhaust job. Every component is manufactured from quality...

Designed to ensure unrestricted exhaust flowDirect fit – no modifications needed to install

Ford F-150 1998, U-Bolt Clamp by Walker®. Diameter: 2.5". Length: 11". With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the complete exhaust...

Ford F-150 GAS 4.6L / 5.4L 1998, Exhaust Header Gaskets by Spectre Performance®. Rooted in racing, Spectre Performance designs and builds every product with the same goal in mind - the best performance in the market proven on the...

High-tech engine parts for the most power and best performanceThe finest exterior and interior parts for superior appearance and functionality

Ford F-150 1998, Premium™ Header Gasket Set by BBK®. These premium steel core graphite gaskets are flexible for a long lasting leak-proof seal even when cylinder head and header flange surfaces aren’t perfectly flat. They can...

Provides a long lasting, leak-proof sealFlexible graphite will conform to surface irregularities and won’t stick to headers or cylinder head

Ford F-150 120.0" Wheelbase / 139.0" Wheelbase / 157.0" Wheelbase Under 8800 GVWR 1998, Zinc Clamp by DynoMax®. 3" Diameter. DynoMax has you covered with a full line of accessories and hardware needed to do the complete exhaust...

Designed to do the exhaust job quickly and easilyOE-style fit, design, and finish

Ford F-150 1998, Direct Fit Catalytic Converter by Walker®. This catalytic converter is constructed specially for your vehicle to directly replace the original equipment part and comes ready to install. The part is designed to meet...

Ford F-150 1998, Universal Catalytic Converter by Walker®. This part features the correct load of precious metals to ensure the proper limitation of tailpipe emissions. It is designed to meet the EPA policy and emission reduction...

Ford F-150 1998, Catalytic Converter by DEC®. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should not be put off, both for safety and legal reasons, but before you waste your time...

Ford F-150 1998, Direct Fit Catalytic Converter by DEC®. Pick out a catalytic converter by DEC and get your emissions back into check without worrying to fail again. These catalytic converters are made from a heavy duty stainless...

Ford F-150 1998, Intermediate Pipe by Walker®. If you want exhaust piping that delivers precise OE-style fit, appearance, and reliability, this part is your number one choice. Every pipe is vehicle-specific and is manufactured...

Designed to directly replace the factory partMade with precision benders and fixture checked

Ford F-150 1998, Tail Pipe by Walker®. If you want exhaust piping that delivers precise OE-style fit, appearance, and reliability, this part is your number one choice. Every pipe is vehicle-specific and is manufactured using...

Designed to directly replace the factory partMade with precision benders and fixture checked

Ford F-150 1998, Exhaust Manifold by Dorman®, 1 Pieces. Packaging Type: Box. More like a complete kit than a single part, many of the Exhaust Manifolds include gaskets and hardware for a complete installation. Since this part is a...

Includes heat-shield for protection of hoses, wiring, and other engine componentsCast iron or stainless tubular construction protects against warping and/or cracking

Ford F-150 1998, Exhaust Manifold Gasket Set by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global engineering resources, the...

Ford F-150 1998, Exhaust Manifold Gasket by Victor Reinz®, Use 1 per Car. OEM Standard. When you’re low on oil, coolant or some other fluid, you may be tempted to just run down to the local auto parts chain store. But before you...

Ford F-150 1998, Exhaust Flange Stud and Nut by Dorman®. Dorman’s Exhaust Flange Stud & Nut provides you with the proper flange stud and nut for replacing your manifold. Save time and energy by having the right hardware on hand...

Direct replacement for a proper fit every timeDurable steel construction

Ford F-150 1998, Universal Fit Catalytic Converter by Eastern Catalytic®. Whether your catalytic converter is damaged by road debris or failed due to an engine problem, you definitely need a new one, and this product is the way to...

Universal fitConverts harmful engine emissions to less dangerous gases and water vapor

Ford F-150 4.6L 1998, Super Competition Fiber Header Gasket by Hooker®. 0.060" Thick. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...

Regardless of whether you're shopping for a simple replacement muffler that delivers original equipment (OE) sound and performance or an upgraded muffler which provides a deeper growl with increased power through freer exhaust flow, you'll see choices between "direct fit" mufflers and "universal" mufflers. In this article, we'll help you understand the differences...

It has been a battle of the ages to make exhaust sound like it should. Having less bends or turns will not only improve the sound but also performance. A custom exhaust is always an option for the race inspired and spirited weekend warriors. Our manufactures offer everything needed to build a custom exhaust to your preference.

Headers are installed because the stock exhaust manifolds usually flow poorly. An exhaust header has individual tubes for each exhaust port, allowing each exhaust pulse to flow unobstructed from the cylinder head. The tubes on headers are usually larger in diameter than the runners on an exhaust manifold and the tubes are mandrel bent for gradual radius bends.

I purchased this exhaust system about two months ago and I have been extremely pleased ever since. The throttle response and torque have been both improved. I'm not sure about the fuel mileage due to the fact that I can't seem to stay out of throttle because the American Thunder just sounds awesome.
The system fits perfectly. And the installation went absolutely beautifully. All the stock hangers line up perfectly with the Flowmaster ones. The instructions were spot on, right down to the exact number of inches to cut off one of the tubes to make it fit.
If you're not a fan of a strong exhaust note, then this is not for you. Since it is a little loud in the cab during city driving. However that noise is subdued at highway speeds when the overdrive kicks in.
I would highly recommend this to anyone who wants their truck to sound strong as hell, but not to those who want a more timid exhaust note.

I purchased these a couple months ago, but waited to write a review. I must say they are simply amazing on my Ford F-150 XTR truck, they sound mean, and have a deep growl. Took my buddy about hour and half to install. I noticed more power at the take off now. I just bought them mainly for the sound, I am not a ''stop an floor it'' kind of driver, but they are 10/10 on every aspect!

The installation was relatively smooth with the exception that the clamps just didn't seem to want to tighten enough to hold the system in place. I bought some regular 2.5" and 3" exhaust clamps and they worked much better than the clamps supplied with the kit. I had to fabricate some hangars because I already had an aftermarket exhaust on the truck and had pitched some of the stock hangar mounts. All in all, a great product and a good fit.

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